Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1ca3f0b32ed9cd4058f06bce75637c112d476bb18ac2433da904038e697c0ad9' 
  AND token = '0BfzBqsLiHfE4HpvVeSDIYzuGrztPbqA6z7L7fbUuqE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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