Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fa67e35613ed29b5b67381604b7449bddce7791c9ac7e27b7ef263b404cb3689' 
  AND token = '78NX9WU9RNqSy1fUbjH+qDPAWsJAkpHSWtAZM62Pu5E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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