Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2201a0db70e4454667cbfd9b3bdc5ff8c60fe2d38bfd7d00aa1b077d2d7be422' 
  AND token = 'Mk0TLZHgvcl0DtEC5I06a4d7GYE6pGaK26rpp7ViOXY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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