Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd29ac47f458bbe01a464105ecb8f02b79eb6642f7407cf833b624a790d218acb' 
  AND token = '3DrJulqPSOica5F8mN6THPfVlxLbpbCy2c29pIpzHvU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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