Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f702594c9d86f4a31fe3b6777a855f73d8fe1c8405440b66d6266357ff760a58' 
  AND token = 'Dv9IXwrT+bPv2r1dR85i5t+SboeOf6n84e+DqTQmnCM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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