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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fdd5a98ab3b66f87ba3e3f09a949ee0bcd6ec70779dabb7f95bfacca2df11e58' 
  AND token = 'BPus6KUkP9AuLKrdkLdashkGzH9xbJ3//DRm7UxmEWo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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