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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aea22bdf1dbf9e2065a4edf8c5b416d6adca47f2e32715fa21cee68139bf17b5' 
  AND token = 'j5lPRimIvcDKjsSyD0CdXACqCGVb0BZGdLdYd3XdhDU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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