Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '40b3a4d330916e749048acae959c3e069b24bf519932475cc5a91531940e443b' 
  AND token = 'KJs/NZc2YfdDlLrcJykdWOF+xE0NclO+ohIpyad4z6s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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