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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '196707a9fe88e9ccb881141ffebd222e6564ba71e36bae9994ca59ea176cc1ab' 
  AND token = 'wzTK2VZWIrb44IUSsH/ztwbDLm8vz0HUUq6JISplNE0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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