Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ffedde025a45467e1ec5128f39f8551a2d34e5c0a5e3799a76101e2511cc38fa' 
  AND token = 'Havy70o7lzQPR7zTP+wDGVw0Cxk+ApsK0lE/9fVSHXY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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