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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '007ae68cb42da2caec7e7d83c545855c2807835d4aa0181354d9005f8a777456' 
  AND token = '3q7jX14racWqTr1CrGBvLuaNWqKCHETR5E8FL1INpZA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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