Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '97d694eef8008c787beb5748fe1ceea550002e0b9f2db2feb8342a58d0d2085e' 
  AND token = 'AFBMdDg0ZXBZD2a50lpfCkkQPRC4xwCY7lnJdGFGakk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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