Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '3a7f87f7491c19601abeec5cf3323b6e603c81052c597f02265c00209cfb0f9f' 
  AND token = 'wC8JC4Cd80mb09PX+NaECtL0B2TKMiMGXBeI/SRL/pQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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