SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '60d02fbfc36b0e70298a6a95f3c365393c3dba8c6011fa344ccf6424e57dd928' 
  AND token = 'ZtaUgCG2AiNWiLiiPzKd3+K7e3svh+Fxyb//08ZoJXY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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