Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'cd7bd89fe14d661f4a62baa94c802db0e8af68ae61f44bcf63737be13486c4fa' 
  AND token = 'RORw00ASDe9UX7tloDx8m9zKIQbTrSDoJp45zMoFGlQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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