Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4c26f70d081ebfcd3b7fc913deeffb6c62ab744c254be28aaf6e3fda106a61f7' 
  AND token = 'iPsS8Y9hhTROHVZBWTdZaazHe47nDliiqhdj1CSJuxM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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