Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7f733fe1af344b9b77b259c65a65d82cd58631a412fac64d84d4fda6a3493598' 
  AND token = 'DZM0zo9tsBvBBDc57MKpiU8BIcN95HYbThU9ge7FroU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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