Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e360b75df8958b31bdedd3037b0e974793a6886ffe13648ebe2b4f96d61d8415' 
  AND token = 'fTiFFyv4YRK96/BZWQzder0/46LlqQKLV6s8d6LqGrE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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