Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6d9bd38f89da2d602e17ad54c4b673b42e9616375ed7d740745592f0977f7283' 
  AND token = 'VI2icWcOklLSeNooaxByTdGrk8Q7sl5P3Ktj8Hq3T8o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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