Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '66efc7b122d6060bc2216411bf0c00d3f58340726a147eb9a2fdc3a1cd15f92a' 
  AND token = '04073Px/w39pZStPpf61OLoAm5/re0Q3i2zjQ61nEhE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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