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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'aa09032296f0ab7d59a5a0e78eb83af240d4315f18960cfbeb1451b257835133' 
  AND token = 'ksOQx4T6B9hV+qCEDX3Tuhpbc3Hbyd14VR2VjquSkqM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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