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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4f459d622516c0c992971a47ba6152fb80657769e9d4b8bf21b28f2e74f8ba09' 
  AND token = 'Vz9r/lbJk7ao7A10RqA0DIeDvNmdo+R3KWvXBYCjU+4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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