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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e4d12e56e7b770a487870cee8c1d54a83a8e6aaf426c1a186b6d4a133b8222c3' 
  AND token = 'aDTw9LTFq1x+fdP2xGzjayvM1plACNUDZKogcLANQpA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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