Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e4a5e1e741a9e704b7b8d47522714b360bb550b78b11878d417116cb47d76a54' 
  AND token = 'or/J8pEQF99xxGmqDiUVsAtaGHTLyO7eqDSlFdikjys=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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