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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2dc59ae58e32bedc95c1a53094b839a4692f72adafea2787292fa2910119258a' 
  AND token = 'Maxj89rkV1oNkwwRtlNrhDCDYPz1IqefXtmRDj7bAzA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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