Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '81a0c6262c0a521eff8c6f27dd41d599119b29b443e94fa5ea4d95851b591927' 
  AND token = '7qNPHeVZwOrTAE/H22LzG5TKiHcKIWQc38ja2ddiV+o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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