Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a04a0e80f46e1069fbeaa7f85634d2fbc167e4b7867b11b80d739b49fff1d715' 
  AND token = 'qqfAFKK4ACXN9NeW/M08lGfxSfC0TxBP37hLPGtdxcE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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