Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd7572a7b9518092f78fa86ed8e4385f7f4e5ad0a72c882846421bf853379401a' 
  AND token = 'B4YCk7u242S2L/CJdRBjc/0v3b6LGIV2SrDJ7f0w2Fo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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