Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3e68c7d08952871409b9371152d75612b7254f736cae6b5fa8f0e3911b590151' 
  AND token = 'YBCPdQLe0oXfKkog1PADeXYO0dnfcdpNFFXzBPqkmPQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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