Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '94608c15685fbdfcdca625018e29b76d73b5337d99656ed63fb3f48a5ad8320c' 
  AND token = 'aBFUQo2N8VMIv/JroA8wSI3aHOtlJd7Zr1J0rjt8DFA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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