Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8494882fb61ba3caf14aef3189e9edc2ab61c9071c96c4cfe04604c4513c7761' 
  AND token = 'e4BIthVTWRHa1bLHIRYLmN4Rji8u/J0iJXJOibUIFuY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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