Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b74191e3c3560f4c2ea56bbdcdf50fe6f01ee4cea4cb1b2593581f6ca48b9a6b' 
  AND token = 'o37CYeXS5KVpeJL0JCKX/UfHd+iH+g34h0lR+IZSFKo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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