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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cdda3fa33899b78ac1fb12bc9616859fff1b3500b061e7a8f0abe6c9e287b641' 
  AND token = 'I4JHjO0buXM818y6MnTNc6ojBfIEq0O68U2oxIe+tmo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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