Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f055d3cb3cabdaf71ab115822525c15969a75ec5eed5761fdeffa73f0b6d9de1' 
  AND token = 'UtuqLg6ZHTHBgL1EHNRHwaOhe1dWhUt7E2TZRrd7sX0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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