Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f134e3ca49895c5b56b5888de18c99e7be783b0c7eceac07cb8ab511dd253282' 
  AND token = 'nnByreEln2JfPqVDFnXR4g+ZuyRAs4Nk7bcSzhXbdrk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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