Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'c362df7d7d6f00f3a4a02556f379a65be90e8aae522328cbbca678fbdc7de6e7' 
  AND token = 'ujQVFTHo+ntFCJzQLQcrRNV91+CajGvFgaewbPdyCy0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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