Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ee8498037ebaf1d89007b4afe7668656ba2c6b160601907462e2800e83fe1ee5' 
  AND token = 'X0m7RyoEpLjqv8V5ZCEjuxd6pi+NDE7sesYMBPujX38=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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