Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0ccb07fc2b2be25e452d9395db873738021443b1fe4bf08b688d33649e62e11b' 
  AND token = 'YrhvruoT+RO3lMisvFdK0s8udi0I7w1aYwbtc/VQBhU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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