Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'cdca07f800bf1ec48c3d4085a501aec93f40ed798f6214dd982e439faa5432ae' 
  AND token = 'TeusN1yfMgm+8zlFlyfjHxU3lHvvlysgt6Qzr95qTBs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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