Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '73dadd1ff2e858c8f820fed7244555c6367d435bc1677d8d720dffe47d077205' 
  AND token = 'lIUto707u7Pi51TcH+JMlMkmpNpeWokft/exGjUIPH4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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