Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '7fecda7b97da53da057855ac1ac059906660252938227d4d3e427aa0cc11e8d5' 
  AND token = 'fBWP0n0YCKUeHX0r/5LNP6/TaVX3qASsoAKiDES77i4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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