Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '44a419da2aadfc28ec188cb00a1fa9c7157a144253501947a5ec585683b0c73e' 
  AND token = 'KLpiu7ES7Exre9EXq5/JKLRpnENB9Ysc19nInECyTOQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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