Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '170064fb16fabb1afd511b2b16d535aa7b9c05f9b3909a5574129b1aebefce1a' 
  AND token = 'rfonm8u6phXbOafIC5J6rZ7cSffD7/4dQwfntxhZQw4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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