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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1f1122dc9f4fded278630066fa27970212e1f677bef6a866a02d87fbd8b68559' 
  AND token = 'aHjLo1PH/4nusMvCfIyUe3Ft9GnSWG5l5OdLedhQY6U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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