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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'cc247aea13fbba260dd3c3b71358b4ce762206f175c0425f5a5b36e88e144fa6' 
  AND token = 'l2kdbEXHKN6LK0Jq08UUkLMIlAsVCW8mPaEf2DDCu/s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}