Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ba3c01a8164cf2b21e8bc40ce6573c7c90207141334c7af19419ad2a80078b4d' 
  AND token = 'DYkavJ6IF7RELo7fWabkwg4niJl3rA0qFw1N2A/bV/Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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