Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eaf04683fb1d6bb65517b91d6d184d2d30fe51ffdea9eb1074bf76d54811223b' 
  AND token = 'mzt7tH+f+r09SVJrgUT86Aza0+JyFjoTgYOaTqv+yJs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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