Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '23f1ea09bda7e6e859866f503d78ed919afd3ccac46763eeb4aa4b534305b3fa' 
  AND token = 'AE/9S/9PUoDnRCbEk4/VRORJwwMC40a34gALKexwaBk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}