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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '07c36e2f297bd7c5511f79ecd4980c2d0ab73ad4978ea1b3c723c8d2f92ac114' 
  AND token = 'iZcJ6C7vdD8bIgodiol+thJeEErpol1vq+nc0TjV3hI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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