Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '61b58429e00358f00533d7f1f6e317b060730b9be0f049991d6acb13fd5d990a' 
  AND token = 'qcBglCu5rWaJxdc0Hpp6i7flmiHt5qLbktXyLhkRD/o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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