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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '622a96c893dbd6aced63f236b8a405e33b7fd81a166e24403664925fdd3f7979' 
  AND token = 'BE6YYb/NAN9AOPHIzXWT0NSSxxJdfhrbH78WGi10gfQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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