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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '6c9e07208b64b79b60eb6576316d8c0c88449bac04bd6ba9f43ef4dd34f34b64' 
  AND token = 'jdNWvb5tom7DX7GsBDC+oRuG5SpOkSY2KpFUu3IUgYc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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