Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bb701b1e4951007724d9a1e1f5cf3af97e6c02af098afb6554b722841bfacc16' 
  AND token = 'TviO6io9dZ6pCVP3zqsH8uc5p6OlYEECB5iNPt0qp+A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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