Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4123fc9ea9333132ad69d6091eee11a74445846994fc2fd5cd1b7f7c7dc89919' 
  AND token = 'H1zj0CcPeviKN7TRtnx2lA/aFNu3GSsmKpG11jYE7L0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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