Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '907f65dcd5ba303f9d939fdee6dc2969b9248e883543d7e677fc479300158165' 
  AND token = '3KIoE22chAme9fajQWfJlr+Fjfr1Q8OSKQ24YgRweUs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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