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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2c5e32fc2f5e3c63bc7a786cb904023e4b1574dac37809939d722ab2c2183360' 
  AND token = 'j3PTj5TDdU8qC8VWKwUGgEbhLNeyRLSef1oA2jk680s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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