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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'd0dc5536c0781f8e36d3a181b2013ff1fa9736808fe003567742bdd6360adeb1' 
  AND token = 'yGi2eVvITJFkHJTmqrt6ji84B48kIFebR/3fvCGJC1k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

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