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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bc948e317d2b1b2e2ed9ee372fe9bb40051531aeec63cc01b6015aa782b03096' 
  AND token = 'OnPCED2QzRziUOE1+Z/fAdwC8M/3bXv0C002sPvqFMg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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