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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '11280cf518b5baafe5e0b89083e10470686e43787c78066227d5b1db16e7ec08' 
  AND token = 'KEGcIyNJsb4+viAIuUala08dMdUWkeq35D4KMGfk2no=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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