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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'f556ab02acdd1b1f1b97b21797cb6b4b96d45ef76f65a5131aab0803df886dd2' 
  AND token = '36ywvFelkkNQ6IOm0OZ7+QhjLbg/ditXe/wlDKjUP3A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00011

JSON explain

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