Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '53eada0d43062196dd69ccd24b6b3135d5ac4ba25959783206b5deba7335be04' 
  AND token = 'BZjm6Sq/9oO31VA0o9n7k4BKdfb6yZdDEqLJb9QqEhc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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