Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bc087beba3c35b59270817c6b42683724c22aada01ed234802dfe3f36558a966' 
  AND token = 'DCLCsU43CcGNzw8AoHOGK1NlX1mIvzt+wZw0p8FlACI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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