Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7a85f3a3a9ce81d96bbf265f0a358654f2293551b2b84940763b5b9bd160ba23' 
  AND token = 'W2AXDWDyHbZkK6hK7vouTAkvsLO3NStYE0ITKQoiDEo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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