Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '03d948a28bb2ba0978e489204487b81d573b418f8865d1a94e2c25b7257f60fa' 
  AND token = '/94viMT/6SSdUrdEquC4g0kLPYkoJT7Zo/eNylmWKzw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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