SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd294154fe31321dac4924132b7c5e3a96129dba15ac258d48f2ff1d688844031' 
  AND token = 'wXa58LVOj1nIDPgWtOIwc1fzBW4vO+M0mHjrZToZ3sY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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