Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '20f3f81885ae05174190e5b1bc3bd136620903d5f16efdc2a160e696320c0065' 
  AND token = 'lWXNlYYZUVbJw1I+z5QMtRC2WIR6pQn52Nmgjw4nlQA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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