Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3c839cf57d3a7315d7953e0366427f460f8abf53e5e58ace83221e43ac1f333a' 
  AND token = 'QYNdB6rqHGbbXJAqxUd3KZezCbwMmvSr2DIxlqPobNU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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